13261728722 has 8 divisors (see below), whose sum is σ = 21701010672. Its totient is φ = 6028058500.

The previous prime is 13261728721. The next prime is 13261728751. The reversal of 13261728722 is 22782716231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13261728722.

It is not an unprimeable number, because it can be changed into a prime (13261728721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301402904 + ... + 301402947.

It is an arithmetic number, because the mean of its divisors is an integer number (2712626334).

Almost surely, 2^13261728722 is an apocalyptic number.

13261728722 is a deficient number, since it is larger than the sum of its proper divisors (8439281950).

13261728722 is a wasteful number, since it uses less digits than its factorization.

13261728722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602805864.

The product of its digits is 112896, while the sum is 41.

The spelling of 13261728722 in words is "thirteen billion, two hundred sixty-one million, seven hundred twenty-eight thousand, seven hundred twenty-two".